Most companies don’t plan year-end tax until October. By then, they’re already late.
Real year-end tax planning happens over 12 weeks, starting in September. It’s not a November scramble. It’s a deliberate progression from assessment to decision-making to execution.
This is your playbook.
Year-end tax planning needs time for three things:
Understanding what’s actually happening. What credits might apply? What timing adjustments are possible? What positions need review?
Evaluating options. If we make this decision now, what’s the tax impact? Should we time this in December instead of November?
Implementing decisions with proper documentation. Not scrambling in January to find support for things we should have documented in October.
Compress it into a few weeks, and you’re making rushed decisions with incomplete information. Spread it over 12 weeks, and you’re making strategic decisions with full visibility.
Week 1-2: Information Gathering
Week 3: Analysis & Gaps
Week 4: Planning Session
Deliverable: Preliminary planning memo identifying key planning opportunities and decision points.
Week 5: Entity Structure Review
Week 6: Estimated Payment Optimization
Week 7: Credit & Deduction Timing
Week 8: Strategy Finalization
Deliverable: Board-ready tax strategy memo documenting decisions, rationale, and estimated tax impact.
Week 9: Documentation & Record-Keeping
Week 10: Deduction Timing
Week 11: Return Preparation
Week 12: Year-End Close
Deliverable: Completed tax returns with organized documentation and year-end summary.
September-October:
November-December:
Everyone: Document decisions and reasoning contemporaneously. Don’t wait until January.
Better decisions: You’re making decisions with full information, not guesses in December.
Confidence: You know exactly what’s happening tax-wise. No surprises in January.
Documentation: Things are documented as they happen, not scrambled together later.
Optimization: You capture credits, time deductions, and optimize structure intentionally.
Board confidence: You can report to boards and investors with clarity about strategy and positioning.
As we covered in our blog on building a tax planning culture, year-end planning is most effective when it’s integrated into normal operations, not a separate event.
The companies that are most sophisticated use this 12-week calendar as part of their quarterly planning rhythm. Tax is considered alongside strategic decisions throughout the year, not just in Q4.
But even if you’re not there yet, following this calendar is transformational. It moves you from reactive scramble to proactive strategy.
You’re reading this in September. Perfect timing.
Download our 12-Week Q4 Planning Calendar to see the specific week-by-week action items, responsible parties, and decision deadlines.
The difference between companies that plan and companies that scramble is 12 weeks of intentional work starting now. Don’t wait until November. Start this week.
Koru Accountancy Corp provides fractional VP/Director of Tax leadership to growing and complex organizations. We specialize in embedding executive-level tax expertise directly into finance teams, supporting companies through growth, transition, and complexity.
Ready to execute a strategic Q4? Book a Discovery Call
Start immediately. You’ve missed some assessment time, but you can compress the first four weeks into two and move forward. The remaining weeks are still valuable. Even partial planning beats no planning.
Having tax expertise involved is important. That could be an internal tax leader, fractional tax leadership, or external advisor. What matters is that someone with tax expertise is part of the decision-making process, not just handling compliance after decisions are made.
Start with what you have. Part of the assessment is identifying information gaps and addressing them in weeks 5-8. Planning doesn’t require perfect information. It requires good-enough information to make intentional decisions.
Yes. In fact, you should. This calendar works year after year. Create a standard process and build it into your annual rhythm. By year two, you’ll have it down to a science.
Waiting too long to start and treating it as a compliance event instead of a strategy event. Companies that view Q4 as a planning opportunity create value. Companies that view it as a task to complete scramble.
